EP 3063020 B1 20180328 - TREAD FOR AIRCRAFT TIRE
Title (en)
TREAD FOR AIRCRAFT TIRE
Title (de)
LAUFSTREIFEN FÜR FLUGZEUGREIFEN
Title (fr)
ARMATURE DE SOMMET POUR PNEUMATIQUE D'AVION
Publication
Application
Priority
- FR 1360603 A 20131030
- EP 2014073190 W 20141029
Abstract (en)
[origin: WO2015063131A1] The present invention relates to an aircraft tyre and, in particular, to the crown reinforcement of an aircraft tyre. An aircraft tyre (1) comprises a working reinforcement (2) radially on the inside of a tread (3) and radially on the outside of a carcass reinforcement (4). The working reinforcement (2) comprises at least one working layer (5) consisting of a zigzag circumferential winding of a strip (6) on a cylindrical surface the axis of which is the axis of rotation of the tyre (1), in a periodic curve (7), the peak-to-peak amplitude of which defines the axial width L of the working layer (5) between a first and a second axial end (I, I'). The working layer (5) is made up, in any meridian plane (YZ) containing the axis of rotation of the tyre (1), of an arrangement of strip portions (6) extending axially from the first axial end (I) to the second axial end (I') of the working layer (5), the strip (6) of width W being made up of textile reinforcers coated in an elastomeric compound. The inventors have set themselves the task of improving the endurance of the working reinforcement of an aircraft tyre by desensitizing the additional thicknesses at the axial ends of the working layers with respect to the risks of cracking. According to the invention, in any meridian plane (YZ) containing the axis of rotation of the tyre (1), the layout of strip portions (6) extending axially from the first axial end (I) to the second axial end (I') of the working layer (5) is such that two consecutive strip portions (6) overlap, at least in part, over a width of overlap e and the width of overlap e between two consecutive strip portions (6) is constant across the entire axial width L of the working layer (5).
IPC 8 full level
B29D 30/30 (2006.01); B29D 30/70 (2006.01); B60C 9/00 (2006.01); B60C 9/20 (2006.01); B60C 9/26 (2006.01)
CPC (source: EP US)
B29D 30/3035 (2013.01 - EP US); B29D 30/70 (2013.01 - EP US); B60C 9/005 (2013.01 - EP US); B60C 9/02 (2013.01 - US); B60C 9/2003 (2013.01 - US); B60C 9/263 (2013.01 - EP US); B60C 11/00 (2013.01 - US); B29D 2030/3078 (2013.01 - EP US); B60C 9/0042 (2013.01 - EP US); B60C 9/2009 (2013.01 - EP US); B60C 2009/0035 (2013.01 - US); B60C 2009/2035 (2013.01 - EP US); B60C 2009/2048 (2013.01 - US); B60C 2200/02 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
FR 3012370 A1 20150501; FR 3012370 B1 20170414; CN 105682943 A 20160615; CN 105682943 B 20180622; EP 3063020 A1 20160907; EP 3063020 B1 20180328; JP 2016534928 A 20161110; US 2016250894 A1 20160901; WO 2015063131 A1 20150507
DOCDB simple family (application)
FR 1360603 A 20131030; CN 201480059381 A 20141029; EP 14796003 A 20141029; EP 2014073190 W 20141029; JP 2016525048 A 20141029; US 201415029965 A 20141029